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Soil mass test flexible bearing plate

A bearing plate and soil technology, applied in the field of foundation soil survey, construction, infrastructure engineering, etc., to achieve the effect of ensuring consistency, application value, and uniform distribution

Inactive Publication Date: 2014-01-29
许年春 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of test loading conditions (concentrated force loading), all the rigid load-bearing plate tests are carried out in engineering investigation and scientific research at present, and no one else has ever proposed the design of flexible load-bearing plates.

Method used

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Experimental program
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Embodiment Construction

[0010] The steel sleeve 1 is welded on the upper surface of the stainless steel plate 2, and transmits the upper load to the lower water. The water bladder wall 5 is composed of a 0.122mm thick two-way carbon fiber cloth coated with polyurethane (PUR) waterproof membrane, and the water bladder wall 5 is connected to the stainless steel plate 2. The distance of the pressure gauge can be 20-30mm. Before the test, pour tap water from the pressure monitoring hole 3, and connect the external pressure gauge after filling. The value of the vertical compressive stress. In order to obtain different settlement amounts at each point, settlement monitoring holes 4 are arranged at different positions of the stainless steel plate 2, and the large sample diagram of the settlement monitoring holes image 3 Among them, the area of ​​the stainless steel sheet 9 must be greater than the area of ​​the piston 6. When the soil below the stainless steel sheet 9 settles downward, the connecting rod 8...

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Abstract

A soil mass test flexible bearing plate is used for field tests of soil mechanics. The soil mass test flexible bearing plate utilizes the principle that the pressure in all the positions inside liquid is the same, bidirectional carbon fiber cloth internally coated with a polyurethane waterproof film serves as water bag wall materials, and no matter the upper portion imposed load is uniformly distributed force or concentrated force, uniform distribution of vertical pressure stress at the bottom of the soil mass test flexible bearing plate can be achieved. The consistency between test conditions and many theoretical models of soil mechanics is guaranteed, and the obtained pressure stress-sedimentation relationship is truer and has higher application value.

Description

Technical field [0001] The invention relates to a device for imposing vertical compressive stress on the surface of soil in field tests of soil mechanics. The device utilizes the principle that the internal pressure of a liquid is equal everywhere to ensure uniform distribution of the vertical compressive stress. Background technique [0002] According to the relationship between the stiffness of the bearing plate and the modulus of the Winkler foundation, the bearing plate can be divided into rigid bearing plate and flexible bearing plate. Under the action of the central load, the bottom of the rigid bearing plate remains flat, and the settlement is equal everywhere. The distribution of compressive stress is related to the engineering type of the soil and the stress state, which is complex and changeable. The design of the rigid bearing plate is very simple, and the bottom surface is circular. Or square, the material is usually thick steel plate. The definition of a flexib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D1/00
Inventor 许年春吴同情杨小院周建国韩洧
Owner 许年春